Comment 1 for bug 1400795

The only weird part is how the output is structured, I'm wondering if we can make it a bit more like the other OSC commands:

steve:keystone$ nova availability-zone-list
+-----------------------+----------------------------------------+
| Name | Status |
+-----------------------+----------------------------------------+
| internal | available |
| |- ubuntuvm | |
| | |- nova-conductor | enabled :-) 2014-12-09T08:48:11.000000 |
| | |- nova-consoleauth | enabled :-) 2014-12-09T08:48:15.000000 |
| | |- nova-scheduler | enabled :-) 2014-12-09T08:48:16.000000 |
| | |- nova-cert | enabled :-) 2014-12-09T08:48:13.000000 |
| | |- nova-network | enabled :-) 2014-12-09T08:48:18.000000 |
| nova | available |
| |- ubuntuvm | |
| | |- nova-compute | enabled :-) 2014-12-09T08:48:19.000000 |
+-----------------------+----------------------------------------+